Presser foot for sewing machines



Aug. 25, 1931. A. .s. RNIERE 1,820,496

PRESSER FOOT FOR SEWING MACHINES Filed July 27, 1929 Patented Auge-ZS, 1931 ALBEn'r s. VRIVIEVRE, or ,o Ioneo ILnINoIs;AssIeNon. To Un on sP'noIAL, ilmonmi I COMPANY, or oII onGo, ILLINOIS, A CORPORATION or ILLINOIS rnrissnn room FOR siiwnvs MACHINES Application 'filed July 27,

- This invention rel ates to new and useful im-' of fabric sections fortrimming,and which is provements in a presser foot *for sewing machines, and more particularlyto a presser.

foot for guiding the upturned edge portions provided with means-for turning down the trimmed portions in flat overlappedrelation for stitching.

An object ofthe'invention is to provide 7 6 independent-yielding devices for turning down the lapped edge portions of the'ffabric sectio11s, wl1ich yielding sections a're'inde pendently mounted and which are'ca'pable of moving beneath the plane of the under face is of the presser foot so as to firmly hold said lapped sections againstthe work supportduring the raising-of the presser foot by a cross seam passing beneath the same. Y

Inthe drawings I V I -Fig. 1 is a top plan view of the presser foot embodyingthe inventionil r a v 1 2 is a bottom plan view-of the'same'." Fig. 3is sectionalviewonthe line 3-3 Fig. 4;:is a-sectional viewbn the line' L I of Fig. 1... 3

. of Fig. 1..

' zontaly disposed trimming devices; The

"Fig. 5'is a sectional view theline 5 -5 Thelinvention is directed to a presser foot for sewing machines producing a fiat seam. Associated with the presser foot' are horiprle'sser footv is providedwith a channel for directing the upturned edge portions of fabric 'sectionsto the-trimming devices and also with means 1 for. turning down the trimmededge portions into fiat lapped posi- 1929. sen-a1 No. 381 494.

the upturned edge portions to the trimming devlces. They are also located in front of the needle opening, and consequently, .op-

erate'upon the fabric between the time when said edge portions are trimmedand when the edge portions are oined' by the stitches.

6 These members "are yieldingly mounted andthe memberoperating upon the underlap section is capable "of moving downward to az'position .beneath .the lower face" ofthe resser; foot so that when the. presser foot is raised by a cross seam entering beneath .the'forward end thereof this yield ingdevice will remain in contact with" the fabric section and hold the fabric, sec? tionfirmly down on the throat plate.

Referring more in detail to the drawings, the Ipresser foot which embodies the inven-' ti'on includes a-shank portion 1' which is adapted tobeattachedto the odinarypresser bar. This shank portion hasjformed integral therewith rigid fabric engaging sections 2 and 3. :The'rigid sections'arel'spacedapart so as to form a guiding channel- 4 through which'the upturned edge portions-of "the fabric sections are led to thetrimmingQde vices. The trimming devices include a stationary trimming member "Bmounted on-the rigidsectionQ of the' 'presser foot, and a movable trimming member 6 -which co0pe r-, ates with the stationary trimming member. These. trimmingzdevices are: so disposed relative, to the-channel l that the upturned edgefp'ortionshof the fabric; sections are trimmed, thus preparing the fabric, sections for la ing. and stitching.

The presser foot isprovided opening? which is in linewith' thechannel .4, Onthe under side of the fabric engaging section-.2 of the pres'ser foot is a nonflexible yielding member 8. Said member is carriedv by. posts 9, 9. Fig." 4 'is a section through 'the ,foot'at': one of these 'p'ostsr A I V spring 10 surrounds the post and bearing her 8 normally forces said member downward I downward movement of I against the footsectionQ and also the mem- '95 I As noted there are two posts which are similar in construction.

The other presser foot section 3 is provided with a recess in its under face in which is located a non-flexible yielding member 12 carried by posts 13, 13 which are similar in construction to those described above. These non-flexible yielding members in the under faces of the presser foot sections are for the purpose of taking care of uneven thicknesses in the fabric sections being stitched. They form no part of the present invention per se, but arethe invention of Alfred T. Chidley and are shown described and claimed in his application Serial No. 367,937, filed June ,3, 1929.

The present invention is directed to the construction and mounting of the devices for turning down the edge portions of the fabric sections into lapped relation for stitching. At the inner end of the channel there is a turning down device 14. This turning down device 14 has a curved under face 15 leading to a flat portion which engages the fabric section after it is turned down. This device 14 is made .of spring metal and is provided with a relatively long shank 16 which is secured to the presser foot section 2 by means of a screw 17. The shank is formed integral with an upwardly projecting portion 16a which is likewise integral with the active portion of the turning down device 14 The length of the shank 16a is such that when the presserfoot is raised, the under face of the device 14 can move to a position be- Death the under face of the rigid portion of the presser'foot. If, during the stitching of the fabric sections, a cross seam passes beneath the front end of the presser foot, it will raise the presser foot to an extentde pending upon the thickness of the cross seam. If this turning down device 14: were rigid with the presser foot it would also be lifted with the presser foot and would thus be lifted off from the fabric section in advance of the cross seam. This would not only re lease the pressure on the fabric section as turned down but it would also release the force being applied to the turning down of the underneath fabric section and likewise raise the upper lapped portion of the fabric section just passing over the same.

The extent to which the yielding device 14 can move downward beneath the lower face of the rigid portion of the presser foot is sufficient to take care of any ordinarycross seam so that when the presser foot is raised this device 14 will remain in contact with the fabric directly in rear of the trimming device and in front of the needle opening. The dcvioe 14, as is clear from the drawings, is at the inner end of the channel and engages the i'abricsection after it is trimmed to turn it down and before it is stitched because the turning down of the fabric section must be accomplished before it is stitched. The other edge of the fabric section is turned to fiat lapped position by a turning down device 18. This turning down device 18 is carried by a shank 19 through which a screw 20 passes. Surrounding the screw 20 and bearing on the shank 19 is a spring 21. This vallows the turning down device 18 to yield upwardly.

turn down the two fabric sections into lapped relation provides a much more efficient con trol of the fabric sections, particularly when cross seams are passing under and across the under face of the presser foot.

It will be obvious that minor changes in the details of construction may be made without departing from the spirit of the in vontion as set forth in the appended claims.

Having fully described my invention, whatI claim as new and desire to secure by Letters Patent, is

1. A presser foot for sewing machines in cluding in combination a foot portion having a needle opening therethrough, a guiding channel extending from the front end of the foot portion longitudinally thereof for 11 recting the upturned edge portions of the fabric sections, said presser foot having devices for turning down the edge portions into overlapped relation with each other, and means for yieldingly supporting said device operating on the under lapped fabric section on said food portion whereby said device is capable of remaining in contact with the fabric when the presser foot is raised by a passing cross seam.

2. A presser foot for sewing machines including in combination a foot portion having a needle opening therethrough, a guiding channel extending from the front end of the foot portion longitudinally thereof for directing the upturned edge portions of the fabric sections, said presser foot having devices for turning down the edge portions into overlapped relation with each other, and independent yielding means for supporting each of said devices on said foot portion whereby said device engaging the under lapped section may remain in contact therewith when the presser foot is raised by a passing crossseam and whereby said device cngagingthe upper lapped section may yield relative to the device engaging the under lapped section to permit a cross seam to pass between said devices.

3.7 A presser foot for sewing machines including in combination a footportion hav ing a needle opening therethrough, a guiding channel extending from'the front end of the footportionlongitudinallythereof for directing theupturned edge portions of the fabric sections, said presser foot having devices for turning down the edge portions into overlapped relation With each other, independent yielding means for supporting each of said devices on said foot portion whereby saidde vice engaging the under lapped section may i remain in contact therewith When the presser foot is raised by a passing cross seam and whereby, said device engaging the upper lapped section may yield relativeto the device engaging the under lapped section to permit a cross seam topass between'said devices, and stitch fingers carried by said de- 0 vice engaging the upper lapped :fabric section. i

4. A. presser foot forsewing machines in- 'cluding in combinationfla foot portion having a needle opening therethrough, a guiding 2 channel extending from the front end of the foot portion longitudinally thereof for directing the upturned-edge portions of the fabric sections, said presser foot having devices for turningsaid fabric sections into overlapped relation With each other, said device engaging the under lapped fabric sec tion having a lower flat face adapted to engage the turned down portion of the fabric section and an inclined face for turning down said section, and yielding means for supporting said device on said foot portion whereby the fi at portionjcan move to a'position beneath the under face ofthe foot portion of the presser foot. i y 4 i 40 In testimony whereof, I afiix signature.'

ALBERT s. RIVIERE.- 

